Characteristics of SA and MRSA Colonization in Orthopedic Inpatients and their Correlation with Postoperative SSI
10.11969/j.issn.1673-548X.2024.08.028
- VernacularTitle:骨科SA和MRSA定植特点及与术后SSI的相关性
- Author:
Shuliang ZHANG
1
;
Yangdahao CHEN
;
Hongfeng SHENG
Author Information
1. 310012 杭州,浙江省立同德医院骨科
- Keywords:
Staphylococcus aureus;
Methicillin-resistant staphylococcus aureus;
Incision infection;
Colonization;
Influencing fac-tors;
Nasopharynx
- From:
Journal of Medical Research
2024;53(8):146-149
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the colonization characteristics of staphylococcus aureus(SA)and methicillin-resistant staphylococcus aureus(MRSA)and their correlation with postoperative surgical site infection(SSI)in orthopedic inpatients,and to ana-lyze the related factors affecting their colonization.Methods Nasal swab and pharyngeal swab samples of 420 patients hospitalized in the Department of Orthopedics,Tongde Hospital of Zhejiang Province from January 2020 to October 2022 were collected.Polymerase chain re-action(PCR)was used to detect the positive colonization of SA and MRSA,and clinical data of patients were obtained.x2 test was used to analyze the correlation between SA positive colonization and postoperative SSI.Univariate and multivariate Logistic regression analysis were used to explore the related factors affecting SA colonization.Results Among 420 patients,19 patients were positive for SA,and the overall SA colonization positive rate was 4.5％.17 patients were positive for MRSA,and the overall MRSA colonization positive rate was 4.0％.There was no statistically significant difference in postoperative SSI between SA colonization positive and SA colonization negative patients(P＞0.05).Thus,there was no significant correlation between SA colonization and the occurrence of postoperative SSI.Univari-ate Logistic regression analysis showed that age and body mass index(BMI)were influencing factors for SA colonization,while multivari-ate Logistic regression analysis showed that BMI was the risk factor for SA colonization,and the higher the BMI,the higher the colonization risk.Age was the protective factor for SA colonization,and the risk of SA colonization decreased with increasing age.Conclusion SA colonization in orthopedic inpatients does not increase the risk of postoperative SSI,and preoperative SA decolonization that increases the patient's medical cost is unnecessary.BMI is the risk factor for SA colonization in orthopedic inpatients,and age is the protective factor.SA colonization of orthopedic inpatients has regional attributes,and each region needs to make medical plans according to its regional SA colonization epidemiological characteristics.
